Cellulose, wool, silk and leather fibers fast-dyed with chlorotriazine containing reactive dyestuffs



United States Patent F 3,226,176 CELLULOSE, WOOL, SILK AND LEATHER FIBERS FAST-DYED WITH CHLOROTRIAZINE CON- TAINING REACTIVE DYESTUFFS Peter Hindermann, Basel, Hans Peter Kolliker, Munchenstein, Basel-Land, Jurg Amman, Basel, and Andr Pugin, Riehen, near Basel, Switzerland, assignors to J. R. Geigy A.-G., Basel, Switzerland No Drawing. Original application Apr. 29, 1960, Ser. No. 25,549, now Patent No. 3,149,100, dated Sept. 15, 1964. Divided and this application July 16, 1964, Ser. No. 383,209 Claims priority, application Switzerland, Apr. 30, 1959, 72,771/59 7 Claims. (Cl. 810) The present application is a division of copending application Serial No. 25,549, filed April 29, 1960, now Patent No. 3,149,100.

The present invention relates to fast-dyed textile fiber products with so-called reactive dyes, viz. dyes which are apt to be chemically fixed on certain textile fibers such as natural and regenerated cellulose fibers, silk, wool and also on leather.

It is well known that sulphonatcd textile dyes containing a chloro-s-triazinylamino substituent may be chemically fixed on cellulose fibres by the action of acid binding agents which create a link between the dyestufi and the cellulose by a divalent oxygen atom which connects the triazine ring with the cellulose structure. The reactivity greatly depends on the number of chlorine atoms present at the s-triazinylamino substituent of the dyes. Thus, dyes with only one chlorine substituent at an s-triazinylamino substituent are relatively stable and may be fixed at elevated temperatures by varied acid binding agents such as alkali metal hydrogen carbonates, alkali metal carbonates, trialkali metal phosphates etc. On the other hand, dyes with two chlorine substituents at an s-triazinylamino substituent are much more reactive and may be fixed on cellulose already at room or slightly elevated temperatures by the action of appropriately selected acid binding agents, but these are less stable on storing. However, if only one chlorine substituent of the dichloro-striazinylamino substituent is replaced by a hydroxy group as the result of an undesired hydrolysis, the reactivity is greatly reduced and bad results are obtained on trying to fix partly hydrolysed dyes on cellulose even under the conditions usual for the dyes containing a monochloros-triazinylamino group mentioned above.

It is the object of this invention to provide dyed textile fibers such as natural and regenerated cellulose fibers, silk, wool and leather which are extremely fast and, in particular, wet-fast.

The above-mentioned object is accomplished by dyeing a textile fiber with a dye corresponding to the general where D represents a member selected from the group consisting of 4-phenylazo-phenyl, 4-naphthylazo-phenyl, 3-(o-hydroxynaphthylazo) phenyl, 4 (o hydroxynaphylazo)-phenyl, 3-(1-aryl-5-hydroxypyrozolyl 4' azo)- phenyl, o-a-phenylazo-hydroxynaphthyl, 3-(1'-aminothraquinonyl-4-amino)-phenyl, 4-(1 aminoanthraquinonyl- 4'-amino)-phenyl and 4 (1' aminoanthraquinonyl 4'- amino)-diphenylyl-4'-radicals, R represents a divalent organic radical selected from the group consisting of 1.4- phenylene and 1,3-phenylene radicals, and n is a positive whole number of at least 2 and at most 6.

The 2 to 6 sulphonic acid groups may be substituents of the organic dye constituent as well as of R. In azo dyes, the sulphonic acid groups may be bound to isocyclic aromatic nuclei which form part either of the diazo or the coupling component and, in anthraquinone dyes, sulphonic acid groups may be attached to the anthraquinone ring system as well as to substituents thereof such as external aromatic ring, for example to phenylamino and diphenylamino substituents. It is evident that apart from sulphonic acid groups, the aromatic nuclei in the dyes according to the invention may contain further substituents usual in organic dyes, e.g. halogen, lower alkyl, lower alkoxy, hydroxy, amino (inclusive of organically substituted amino), acylamino and carboxylic acid groups.

The reactive dyestuifs used according to this invention are thus characterized in that, at triazine rings which are spatially separated by NHR-NH--, there are mobile substituentsand at one hetero ring only one such substituent but at the other there are two such substituents. Thus, because of this characteristic construction, there are two centres of ditferent reactivity in the dyestuffs according to the invention.

In the following the cyanuric chloride radical will always he expressed by Cyf or Cy The reactive dyestuifs according to the invention are obtained by reacting 1 mol of a dyestuif containing an amino group with 2 mol of cyanuric chloride and with 1 mol of a diaminobenzene compound corresponding to H NRNH It is of advantage if, in the diaminobenzene compound, the one amino group reacts quickly and the other more slowly. For example one amino group can be sterically hindered and/or of weakened basicity. This one amino group is given such properties advantageously by O-substitution, in particlar by O-substitution with acid groups, mainly the sulphonic acid group. Thus, 1.3- and 1.4-diaminobenzene-6-sulphonic acids in particular are very suitable components for the construction of dyestuffs according to the invention.

The preferred method for the production of dyestuffs according to the invention consists of the following reactions:

1 mol of a water soluble organic color component containing one amino group is first reacted with 1 mol of cyanuric chloride under mild conditions. 1 mol of a diamino compound corresponding to H NR-NH is reacted under mild conditions with the condensation product obtained which contains two mobile substituents at the heterocyclic radical. Then this condensation product is reacted with a further mol of cyanuric chloride.

A modification of this process for the. production of reactive dyestuffs according to the invention consists in first reacting 1 mol of a diamino compound corresponding to H NR-NH under mild conditions with 1 mol of cyanuric chloride, then condensing the reaction product with one mol of a dyestuff corresponding to D containing an amino group and finally condensing this product with a further mol of cyanuric chloride.

A further modification of the process for the production of reactive dyestuffs according to the invention consists in reacting first 1 mol of a diaminobenzene compound with 2 mols of cyanuric chloride and then reacting the reaction product with one mol of the dyestutf corresponding to D containing one amino group.

Finally, the process for the production of reactive dyestuffs according to the invention can also be performed in such a manner that components are used for the construction of the dyestufii which contain the characteristic radical Cy R-Cy or the radical Cy and if the latter radical is used, then reacting the dyestuif with a di aminobenzene compound and with one mol of cyanuric chloride. These processes are particularly useful for the production of azo dyestuffs according to the invention, the critical substituent being in either the diazo or the coupling component.

In all reactions with the cyanuric chloride, the usual precautionary measures are advisable in order to avoid reactive chlorine atoms which should remain in the dyestuiT molecule being exchanged too soon. The temperature and pH conditions should be adapted to the mobility of the substituents to be replaced. Thus, for example, the first chlorine atom of the cyanuric chloride should be exchanged at low temperatures of up to at most 20 and the second chlorine atom at medium temperatures of 2550 C. Alkali metal salts of low aliphatic acids, e.g. sodium acetate or sodium formate, are used with advantage as acid buffering agents in the first step. Also neutral alkali metal sats of polyacids can be used, in particular also the alkali metal salts of polysulphonated starting dyestuffs Also the neutralization of the reaction mixtures must be performed with the necessary precautions. For this purpose advantageously dilute solutions of alkali carbonates or alkali bicarbonates are used, the neutralization is performed at low temperatures and pH values of the reaction mixtures of over 6.5-7.0 are avoided. Also the reaction products must be isolated and dried with the necessary care.

In the advantageously water soluble organic color component D, the water solubilizing group is chiefly the sulphonic acid group. Some of the acid Water solubilizing groups can be in the form of the free acid, but generally they are advantageously in the form of their lithium, sodium, potassium or ammonium salts.

If D is an azo dyestuif, then it is principally the radical of a monoazo dyestuff. Suitable aminoazo dyestuffs advantageously contain two to three sulphonic acid groups. The amino group to be coupled with the cyanuric chloride can be an actual component of aromatic radicals bound by the azo group or it can be in external substituents, for example in aminobenzoylamino groups.

Aminoazo dyestuffs used according to the invention can be produced by the usual methods, for example from nitro-arylazo dyestuffs or nitrobenzoylaminoarylazo dyestuffs by reduction of the nitro groups; also by coupling aryldiazonium compounds with aromatic amines coupling in the p-position to an acylatable amino group; in addition by coupling with aminoaryl pyrazole compounds such as 1-aminophenyl-S-pyrazolones or --aminopyrazoles, and by coupling with aminonaphthol sulphonic acids and derivatives thereof having a modified amino group, e.g. an aminobenzoylated amino group. Here, particularly valuable dyestuffs are those obtained from l-hydroxynaphthalene-B-sulphonic acids coupled in the 2-position with diazobenzene-o-sulphonic acids, which hydroxynaphthalene compounds containing an amino group or an aminobenzoylamino group in the 5-, 6-, 7- or 8- position can also be further substituted, e.g. still further sulphonated.

When producing dyestuffs according to the invention using dyestuif components which already contain the characteristic radical Cy NHR--NHCy the main diazo components are l-amino-3- or 4-substituted aminobenzene-G-sulphonic acids whereby the substituted amino group contains the characteristic radical or an aminobenzoyl group is substituted by the characteristic radical. Examples of coupling components having the characteristic radical given above are aminonaphthalene sulphonic acids, particularly the aminonaphthalene sulphonic acids mentioned in the previous paragraph, as well as l-(aminophenyl)-pyrazolone compounds coupling in the 4-position. These components contain the charateristic substituent bound directly to the amino group or to the amino group of an aminobenzoylamino substituent.

' As has already been explained above, only a part of the characteristic substituent can be present and it can be fully formed only in the dyestufi molecule.

Also if D is the radical of an anthraquinone dyestuff, the characteristic substituent CY NHDNHCy is not directly at the anthraquinone structure but, for example at nuclearly bound phenylamino or diphenylamino groups. The acid water solubilizing groups, in particular the sulphonic acid groups, however, can be present as substituents of the anthraquinone radical and as substituents at external aryl radicals of nuclearly bound groups, for example as substituents in one of the groups listed above. Anthraquinone dyestuffs according to the invention are derived from 1.4-diaminoanthraquinone having an aromatically substituted amino group and from derivatives correspondingly substituted in the nucleus, e.g. from 2-, 5-, 6- and 7-halogen-, 5'- or 8-hydroxy, 5- or 6-alkyl sulphonyl-, 5- or 6-trifluoromethylderivatives, particularly, however, from 1.4-diaminoanthraquinone-Z-monoor -2.5-, -2.6-, -2.7- or -2.8-disulphonic acids, mainly however, from 1-amino-4-phenylamino-anthraquinone-Z-sulphonic acid.

The dyestuffs used according to the invention having good water solubility produce wet fast dyeings on organic substrata containing hydroxyl groups, in particular on cellulose material, by impregnating the material with aqueous dyestutf solutions and fixing in the presence of acid binding agents. The impregnating liquors can contain the additives usual in dyeing, for example inorganic neutral metal salts such as sodium chloride and sodium sulphate, also wetting, dispersing, levelling, or thickening agents, acid amides such as urea or low fatty acid amides and, possibly, also hydrophilic organic solvents. Basic dissociating alkali metal salts of inorganic polyacids, e.g. the lithium, sodium or potassium salts of phosphoric acids, carbonic acid, boric acids, silicic acids and, possibly, even dilute solutions of alkali hydroxides are mainly used as acid binding fixing agents. Because of their characteristic structure, the dyestuffs according to the invention are distinguished by a hitherto unattained multiplicity of uses as, after most of the fixing processes known up to now, i.e. wet or dry, cold or hot, they can be fixed equally well. Their use, therefore, is not limited to particular apparatus or specific dyeing instructions. The cellulose dyeings attained with the new dyestuffs are distinguished by a relatively very slight loss in strength on soaping.

The dyestuffs according to the invention are suitable for attaining fast dyeings on organic substrata having nucleophilic groups, in particular for the dyeing of keratine fibres such as wool and for the dyeing of leather.

Further details regarding the processes for the production of the dyestuffs according to the invention can be seen from the following examples which illustrate but do not limit the invention in any way. In the examples, where not otherwise stated, parts are given as parts by weight and the temperatures are in degrees centigrade. The relationship of parts by weight to parts by volume is as that of grammes to millilitres.

EXAMPLE 1 42.1 parts of the aminoazo dyestuif of the formula S|O3H SOaH are dissolved in 800 parts of water and the reaction is made neutral with sodium carbonate. This solution is added dropwise within 2 hours at 02 to an aqueous, finely dispersed suspension of 22 parts of cyanuric chloride obtained by pouring the cyanuric chloride solution in parts of acetone onto ice water. As soon as no more starting dyestuff can be traced, the dyestufi' solution is made weakly acid (pH value 6.0-6.5) by carefully dropping in a dilute sodium carbonate solution at 0-2.

SIOsH SOaH is separated by the addition of sodium chloride, filtered off, washed with dilute sodium chloride solution and, without drying, is dissolved in 800 parts of water. A neutral solution of 18.8 parts of 1.3-diaminobenzene-6- sulphonic acid in 500 parts of water is added to this solution and the Whole is then warmed to 4050 until the pH aqueous, finely dispersed suspension of 22 parts of cyanuric chloride. As soon as no more free amino groups can be traced, the dyestuif of the formula is salted out, filtered off, washed with dilute sodium chloride solution and dried in the vacuum. The dyestulf is a brown powder which dissolves in water with a yellow and in concentrated sulphuric acid with a red colour.

If cotton is impregnated in the foulard with a 2% solution of this dyestuff, dried, then treated with a solution which contains 1% of caustic soda lye and 30% of sodium chloride and then steamed for 5 minutes at 100 103", then rinsed and soaped at the boil for 30 minutes, then a level, wet fast, yellow dyeing is obtained.

The colour strength and the fastness properties of the cellulose dyeings are to a great extent independent of the variables in the dyeing method; similar results are also obtained at fixing temperatures of from 20 C. up to value of the reaction mixture remains stable. The dye- 100 C. stuff of the formula If, instead of the 42.1 parts of the aminoazo dyestuff C1 given above, a corresponding number of parts of the aminoazo dyestuffs given in the following table are used S0311 and if 18.8 parts of the aromatic diarnines given in the I N N table are used and the condensation is erformed under u l P N=N NHG\ NNH SOSH similar conditions with a sl1ght excess of cyanuric chloride, then dyestuffs are obtained the cellulose dyeings of CH3 which have similarly good properties.

Table No. Aminoazo dyestufi Diamino compound Shade on cotton 1- ZamiuonaphthaleneA.S-disulphonic acid- 1- 1.3-diaminobenzene-fi-sulphonic acid- Yellow.

amino-2rmethoxy-fi-methylbenzene.

2 2-aminollaphthalene-4.S-disulphonio acid- 1- D0.

amino-3-aeetylaminobenzene.

3 2-amin0naphtha1ene-4.8-disulph0nic aoid D0.

amiuobenzene.

4. 2-aminonaphthalene-3.G-disulphonic acid 1- 1.4-diaminobenzene-G-sulphonic acid. D0.

amino-3-methylbenzene.

5 Z-aminonaphthaIene-G.8-disulphonio acid 1- do Do.

amin0-3acetylaminobenzene.

6.. 2-amiuonaphthalene-6.8-disulphonie acid- 1- 1.3-diaminobenzene fi-sulphonic acid- D0.

amino-2-methoxy-5-methylbenzene.

7 2-aminonaphthalene-3.fi-disulphonic acid 1- do Do.

amino-3-ethoxybenzene.

8 2-aminonaphthalene-4.S-disulphonio acid-*N- do Do.

methylaminobenzene.

9 1-amin0benzene-2.5-disu1ph0nic acid-fldo Do.

amino-3-acetylaminobenzene.

10- l-aminobenzene-Z-carboxylic acid-i-sulphonie 1.i-diaminobenzene-fi-sulphonic acid- Do.

aeid 1-amino-3-carbon1ethoxyaminobenzene.

11..-- 6-methyl-2-(4-aminophenyl)-benzthiazole-3.7'- 1.3-diaminobenzene-G-sulphonic acid" Do.

disulphonie acidl-amino-El-methylbenzene.

12 Mixture of 3-ami110pyrene-5.8-disulphonic acid -do Yellowand 3-aminopyrene-5.IO-disulphonic acid-1- orange. amino-B-methylbenzene.

13 Z-aminonaphthalene-4.8-dist1lphonic acid- 1- 1.idiaminobenzene-G-sulphonie acid- Yellow.

amino-3-methylbenzeue.

14--.. do 1.3-diaminobenzene-6-su1phonic acid" D0.

is precipitated by the addition of sodium chloride, filtered off,washed in dilute sodium chloride solution and again dissolved in 800 parts of water at a pH of 6.5-7.0. This solution is added dropwise within 2 hours at 0-2 to an EXAMPLE 2 18.8 parts of l.3-diaminobenzene-6-sulphonic acid with the addition of sodium carbonate are, in the form of the sodium salt, dissolved in 300 parts of water with a neutral 3,226,176 7 8 reaction. This solution is gradually added dropwise at EXAMPLE 3 3 to an aqueous, finely dispersed suspension of 20.3 parts of cyanuric chloride, obtained by pouring a solution of cyanuric chloride in 150 parts of acetone onto ice water. The reaction is complete when the pH value of the solution remains stable, which is in about 1 hour. The dissolved condensation product is diazotised at 0 with 25 parts of 30% hydrochloric acid and 6.9 parts of sodium nitrite and the diazonium compound formed is' coupled, at a slightly acid reaction of the solution, with a solution of 34.8 parts of the disodium salt of l-hydroxynaphthalene-4.6-disulphonic acid in 300 parts of water. On completion of the coupling, the dyestuff of the for- 18.8 parts of 1.3-diaminobenzene-6-sulphonic acid are dissolved in the form of the sodium salt, in 200 parts of water by the addition of sodium carbonate. The solution has a pH of 6.5-7 and is added dropwise Within 1 hour at 04 to a finely dispersed suspension of 18.45 parts of cyanuric chloride in ice water. The reaction is complete when the pH of the solution remains stable, which is in about 1 hour.

The dissolved condensation product is diazotized at 0 with 25 parts of 30% hydrochloric acid and 6.9 parts of sodium chloride and the diazonium compound formed is coupled, at a weakly acid reaction of the solution, with mula a solution of 27.6 parts of the sodium salt of 1-phenyl-3- methyl- 5 -pyraZolone-4'-sulphonic acid in 250 parts of OH SOHH water. On completion of the coupling, the dyestufi of the o-o1 formula H \N s0 H ()1 H038 l nt-o JCl .20 3

NH- is separated with sodium chloride, filtered off, washed r with dilute sodium chloride solution and, without drying, dissolved in 800 parts of water. A neutral solution of 18.8 parts of l.4-diaminobenzene-3-sulphonic acid in 300 parts of water is added to this solution and the whole is heated to 40-45 until the pH value of the reaction mixture remains stable. The dyestufi of the formula SOBH on S0 11 (1J1 N-N /C\ t i Hols l 'IHC C-NHNH2 is precipitated by the addition of sodium chloride, filtered off, washed with dilute sodium chloride solution and 40 is separated with sodium chloride, filtered off and washed again dissolved in 800 parts of water at a pH of 6.5-7.0. with dilute sodium chloride solution. The moist dyestulf This solution is added dropwise at 0-2 and within 2 is then again dissolved in 800 parts of water. A neutral hours to an aqueous finely dispersed suspension of 22 solution of the sodium salt of 18.8 parts of 1.4-diaminoparts of cyanuric chloride, A oon a no more free benzene-6-sulphonic acid in 500 parts of water is added amino groups can be traced, the dyestutf of the formula dropwise to the dyestulf solution at 4045 and within 1 r r E1 a is salted out, filtered 01f, washed with dilute sodium chlohour. Suflicient sodium chloride is added to the solution ride solution and dried in vacuo. The dyestutf is a formed of the dyestuff of the formula brown-red powder which dissolves in water with a scarlet 503E Cl colour. 1 I

If cotton is treated in the foulard at 20 with a 2% 0 0 aqueous solution of the above dyestuff, which solution I fi also contains 15 parts of sodium carbonate per litre, and NH:4 is then rolled up and left for 2 hours, then rinsed and N soaped at the boil for 30 minutes, a very level scarlet I N 503E dyeing is obtained which is wet fast. The advantage of the new dyestufi lies in the fact that it can be fixed with equally good results onto cellulose fibres by the hot dyeing process.

If, instead of the 34.8 parts of l-hydroxynaphthalene- SOBH 4.6-disulphonic acid, equal parts of l-hydroxynaphthaleneto precipitate it. The dyestuif is filtered 01f and washed 3.6 disulphonic acid, 1 hydroxynaphthalene-3.8-disulwith a little sodium chloride solution. The moist dyephonic acid, 1-hydroxynaphthalene-4.8-disulphonic acid, stufi is dissolved by the addition of sodium carbonate in or of 2-hydroXynaphthalene-3.o-disulphonic acid are used 500 parts of water with a neutral reaction and this solution and otherwise the same procedure as above is followed, is added dropwise within 1 hour at 04 to a finely disthen dyestuffs having similar good properties are obtained. persed suspension of 18.45 parts of cyanuric chloride in ice water. When no more diazotisable amino groups can be traced, the dyestuff solution and then, Within half an hour, a solution of 17.3 parts of diazotised 1-aminobenzene-Z-sulphonic acid is salted out with sodium chloride, filtered off, washed with sodium chloride solution and dried in the vacuum. The dried dyestulf is a deep yellow powder which dissolves in Water and in concentrated sulphuric acid with a yellow colour.

If cotton is impregnated in a foulard at 50 with a 1% solution of this dyestufi which contains g. of sodium carbonate per litre, exposed to a heat of 95 for 2 hours, rinsed and then soaped at the boil for minutesonly a little dyestuff being washed away-then a yellow dyeing which has good wet fastness properties is obtained.

At lower foulard temperatures and at fixing temperatures between and 90, dyeings of the same shade and colour strength which have equally good fastness properties are obtained.

If, in the above example the 27.6 parts of coupling component are replaced by a corresponding number of parts of the coupling components given in the following table and if 18.8 parts of the diamines given are used and the procedure is otherwise analogous to that described in this example, then dyestuffs are obtained which have similarly good fastness properties.

31.9 parts of 1-amino-8-hydroXynaphtha1ene-3.6-disulphonic acid are dissolved with sodium carbonate in the form of the sodium salt in 200 parts of water. The solution has a pH of 6-6.5 and is then added dropwise within 1 hour at 0-2 to a finely dispersed suspension o"f l8.45 parts of cyanuric chloride in water. The reaction is complete when no more diazotisable amino groups can be traced.

is poured in. As soon as the coupling is complete, the dyestuff, which has partly precipitated, of the formula is converted into its sodium salt by careful neutralisation with diluted sodium carbonate solution, and in this form it is completely precipitated with sodium chloride. The precipitate is filtered off and well Washed with sodium chloride solution. The moist filter cake is again dissolved in 600 parts of water.

A neutral solution of the sodium salt of 18.8 parts of 1.3-diaminobenzene-6-sulphonic acid in 500 parts of water is added dropwise to this solution at 4045 within 1 /2 hours. The mixture is stirred for another 2 /2 hours at this temperature until the starting dyestuif has disappeared. The condensation product of the formula is precipitated by saltin-g out with sodium chloride, filtered off, washed with sodium chloride solution and again dissolved with a neutral reaction in 400 parts of Water.

This solution is added dropwise at 04 within 1 hour to a suspension of 18.45 parts of cyanuric chloride in 1000 parts of ice water. The reaction is complete when the pH value of the reaction mixture remains stable. The end product of the formula The reaction product is precipitated with sodium chloride, filtered oflF, washed with sodium chloride solution and then immediately dissolved again in 350 parts of after careful neutralisation with sodium carbonate solution, is precipitated in the form of the sodium salt by the addition of sodium chloride. It is filtered off, washed water. 30 parts of sodium acetate are added to this with sodium chloride solution and dried in vacuo.

persed suspension of 22 parts of cyanuric chloride.

The dyestuff is a dark red powder which dissolves in water with an intensive red and in concentrated sulphuric acid with a blueish red colour.

To produce wet fast dyeings, cotton is treated in the foulard at 50 with an aqueous solution containing 2% dyestuif, 20% urea and 2% sodium carbonate, squeezed out, dried and then fixed for minutes at 140-160, rinsed and then soaped at the boil for 30 minutes. Deep red shades which are fast to wet and light are obtained.

The colour strength is not reduced if considerably lower fixing temperatures are used or even if dyeing is performed by the usual soda-alkaline dyeing process at -50, the urea being replaced by 100 g. per litre of sodium chloride.

If the 31.9 parts of the coupling component used in the above example are replaced by a corresponding number of parts of the components given in the following table in the form of their triazinyl compounds and if the amines given in the table as diazonium compounds HOsS- the example, then dyestuffs are obtained which have similar' properties and with which cellulose dyeings having similar fastness properties are obtained.

careful addition dropwise of a dilute sodium carbonate solution at 0-2. The dyestuflt of the formula is salted out, filtered off, washed with dilute sodium chloride solution and dissolved, while still moist, in 800 parts of water. A neutral solution of the sodium salt of 18.8 parts of 1.3-diaminobenzene-4-sulphonic acid in 300 parts of water is added to this solution and the whole is then heated at -45 until the pH value of the reaction mixture is stable. The dyestuif of the formula SOaH is precipitated with sodium chloride, filtered off, washed with sodium chloride solution and again dissolved in 800 parts 'of water at a pH of 6.5-7.0. This solution is added dropwise at 0-3 and within 2 hours to an aqueous,

35 finely dispersed suspension of 22 parts of cyanuric chlo- Table No. Diazonium compound irom- Coupling component Diamine Shade on co ton 1 1-amino-4-methylbenzene-2-su1- 1-(2.4-dichloro-1.3.5-triazinyl-(6)-amino)-8-hydrox- 1.3-diaminobenzene-G-sulphonic Red.

phonic acid. yna hthalene-B.fi-disulphonic acid. aci 2 l-aminobenzene-Z-sulphonic acid 2-(2A -dich1or0-1.3.5-triazinyl-(6)-amino)-8-hydroxdo Orange.

yna hthalenc-fi-sulphonic acid. 3 l-aminobenzene-2-sulphonic acid.-. 2-(2A -dichloro-1.3.5-triazinyl-(6)-amino)-5-hydroxdo Do.

. ynaphthalene-7-sulphonic acid. 4 l-amino-tacetylaminobenzene-2- d0 do Do.

sulphonic acid. 5 l-aminobenzene-2-su1phonic acid. 1-(2.4-dichloro-1.3.5-triazinyl-(6)-arninobenzoyldo Red.

amino) -8-hydr0xynaphthalene-3,6-disulph0nic acid. 6 do d0 1,4-digminobenzene-fi-sulphonic D 0.

EXAMPLE 5 50.3 parts of the aminomonoazo dyestuff obtained by 0 Has SOaH coupling diazotised 1-amino-4-nitrobenzene-6-sulphonic acid with 1-hydroxynaphthalene4.6-disulphonic acid and reducing the nitro group with sodium sulphide, are dissolved in 800 parts of water The pH is adjusted to 6.5- 7.0 with sodium carbonate. This solution is added dropwise within 2 hours at 0-3" to an aqueous, finely dis- As soon as no more starting dyestuff can be traced, the dyeride. As soon as no more free amino groups can be traced, the new dyestuif of the formula l 01 2 r so H NH-C -o1 1 I I NHC C-NHO-SOaH is salted out, filtered off, washed with sodium chloride solution and dried in vacuo. The dyestuif is a brown powder which dissolves in water with a red colour.

If cotton is impregnated with a 2% aqueous solution of the dyestuif which contains 20% urea and 2% sodium carbonate, and is then sgueezed out and fixed for 5 minutes at 140-160", then after rinsing and soaping, a level,

stulf solution is made weakly acid (pH 6.0-6.5) by the red, wet-fast dyeing is obtained. The dyestuif can be 13 fixed on cellulose fibres with equally good results by other known methods.

If, instead of the 50.3 parts of the aminomonoazo dyestuff mentioned in the above example, equal parts of the aminomonoazo dyestufi produced by coupling diazotised 1-amino-4-nitrobenzene6-sulphonic acid with l-hydroxynaphthalene-3.6-disulphonic acid, or with l-hydroxy- 14 This solution is added dropwise within 1 hour at 40-45 to a solution which is neutral at first of the sodium salt of 18.8 parts of 1.4-diaminobenzene-6-sulphonic acid in 500 parts of water. As soon as the pH of the reaction mixture remains stable, the sodium salt of the dyestuff of the formula naphthalene-3.8-disulphonic acid, or with l-hydroxy- NH: naphthalene-4.8-disulphonic acid or with 2-hydroxy- H I naphthalene-3.6-disulphonic acid and reducing the nitro 1O S03H Cl group with sodium sulphide are used and otherwise the procedure described in this example is followed, then dyestuffs having similar good properties are obtained. g

EXAMPLE 6 NHQNHO\ )J-NH-O-NH: 533 parts of the sodium salt of the anthraquinone dye- $0311 N S OaH stuff of the formula v 0 M12 is precipitated by the addition of sodium chloride, filtered I1 I ofi, washed with diluted sodium chloride solution and gsoafi again dissolved in 1500 parts of Water with a neutral reaction. This solution is again added dropwise within 1 hour at 04 to an aqueous, finely dispersed suspension of 18.83 parts of cyanuric chloride. l 3 As soon as the starting dyestuif can no longer be traced and the pH of the reaction mixture remains stable, the SIOQH solution of the dyestuif of the formula (I) NH:

SO3H C1 C1 5 N N N N I iH NH i t NH NH t t-..

are dissolved in 750 parts of water with a neutral reaction. This solution is added dropwise within 1 hour at 04 to a finely dispersed suspension of 19.37 parts of cyanuric chloride in ice water. The mixture is further stirred for another hour at 04, after which time the starting dyestulf has completely reacted. The blue dyestutf formed of the formula Table is carefully neutralised with sodium carbonate solution to a pH of 6.5-7.0. The dyestuff is then salted out, filtered off, washed with sodium chloride solution and dried in vacuo.

The dyestufi is a dark blue powder which dissolves in water with a blue and in concentrated sulphuric acid with a bordeaux red colour.

Cotton is treated in the Foulard at 40 with a 2% aqueous solution of the above dyestuif, which solution contains 15 parts of sodium carbonate per litre, rolled up, left for 2 hours, then rinsed and soaped at the boil for 30 minutes. In this way a blue dyeing with good wet fastness properties is obtained in this way. The same result can be obtained on using a hot dyeing process.

If, instead of the 53.3 parts of the dyestulf mentioned above, a corresponding number of parts of the dyestuffs named in the following table are used and 18.8 parts of the diamines given are used and the condensation is performed under corresponding conditions with the calculated amount or a slight excess of cyanuric chlorides, then dyestuffs are obtained, the cellulose dyeings of which have similarly good fastness properties.

Anthraquinone dyestufi Diamine Shade on cotton 1.3-diaminobenzene-G-sulphonic acid Blue.

No. Anthraquinone dyestufi s Diamine Shade on cotton 0 NHz u l 2 SO H do Greenish blue.

H O as H (5, 8) 0 NH -NH;

11 l 3 SO3H 1.4-diaminobenzene-fi-sulphonicacid Green-blue.

u O NH NH2 SOaH O II I m-0 O OH 1.3-diamin0benzene-fi-sulphonic acid". Blue.

II I O NH NH2 0 NHz I] l 5 -SO H do Do.

0 NH 7 V [I r SO H do Greenishblue.

HOaS I 7 ll 0 NH 0 NH: H I

7 -S 0 3H 1.4-diaminobenzene-fi-sulphonic acid-" Green-blue.

H O aS- ll 0 NE NH;

O NH:

8 Qm-SOQH 1.3-diaminobenzene-fi-sulphonic acid... Greeuish blue.

$0311 0 NH NH2 v SOaH EXAMPLE 7 i persed, aqueous suspension of 18.45 parts of cyanuric A neutral solution of the sodium salt of 18.8 parts of 5 chloride and this solution is added dr p Without 1.3-diaminobenzene-G-sulphonic acid in 250 parts of water l lating the intermediate iprodu c t ,""to a solution of 56.9 is poured within half an hour at 0-2 into a finely dis- '15 parts of 1 amin-o-4-(4-amindphenylamino) anthraqui- 3,226,176 17 18 none-2.3'6-trisulphonic acid in 600 parts of water which has been made neutral with sodium carbonate, the addition being made at 4045 within 2 hours.

After a further hour at this temperature, the dyestutf of wherein D represents a member selected from the group consisting of 4-phenylazo-phenyl, 4-naphthylazo-phenyl, 3 (o hydroxynaphthylazo) phenyl, 4 hydroxynaphthylazo) phenyl, 3 1' phenyl hydroxythe formula 5 O NH2 II I SO1H (:1 110 s a N N H ll l 0 NH NH- oNH -s0311 N I 80 11 NH:

is salted out, filtered oil and washed with dilute sodium chloride solution. While still moist it is then dissolved in 700 parts of water with a neutral reaction and this solution is added dropwise within 1 hour to a finely dispersed, aqueous suspension of 18.45 parts of cyanuric chloride.

After stirring for a further hour at this temperature, the pH of the solution does not change any more, i.e. the condensation is complete. The sodium salt of the dyestuff of pyrazolyl 4' azo) phenyl, o oz phenylazohydroxynaphthyl, 3 (1 aminoanthraquinonyl 4' amino) phenyl, 4 (1' aminoanthraquinonyl 4 amino) phenyl and 4 (1' aminoanthraquinonyl 5 amino) diphenylyl-4-radicals, R represents a divalent organic radical selected from the group consisting of 1.4-phenylene and 1.3-phenylene radicals, and n is a positive whole number of at least 2 and at most 6.

the formula 0 NH: II I SO3H (11 HO s 01 a N I t (i NHQNH(HJ e-mnQ-som N H I 80311 NH 0 0-01 is precipitated with sodium chloride, filtered ofi, washed 2. The reaction product of cellulose fiber with a dye with dilute sodium chloride and dried in vacuo. It is a of the formula dark blue powder which dissolves in water with a greenish blue and in concentrated sulphuric acid with a dull C1 1 violet colour. J;

If cotton is impregnated at 40 with a 2% aqueous soluso H 3 )nl tion of the dyestufi which solution also contains 20% urea H A; 3 3 and 2% sodium carbonate, squeezed out and fixed for 5 Y T minutes at 140-160", then, after rinsing and soaping, a H N N H N level, strongly greenish blue, wet-fast dyeing is obtained. The dyestufl can also be fixed on to fibres W1t h wherein D represents a member selected from the group q y 8 results under known apphcanon Condl consisting of 4-phenylazo-phenyl, 4-naphthylazo-phenyl, trons includingthe cold dyeing process. 3 (o hydroxynaphthylazo) phenyl, 4 (O h What We 0121 1 naphthylazo) phenyl, j3 (1' phenyl 5 hydroxy- 1. The reaction product of a fiber selected from the pyrazolyl 4' azo) phenyl, O a phenylazohydroxy group consisting of cellulose, Wool, silk and leather with h h l, 3 (1' i th i l 4 i a dye of the formula phenyl, 4 (1 aminoanthraquinonyl 4 amino) phenyl and 4 (l aminoanthraquinonyl 4' amino) 55 diphenyl 4' radicals, R represents a divalent organic (S O H) radical selected from the group consisting of l.4-phenylene 3 and 1.3-phenylene radicals, and n is a positive whole numl I II her of at least 2 and at most 6. I 23-01 3. The reaction product of cellulose fiber with a dye H N N H N of the formula S0311 01 G1 I 1 l 0rn-0 --o-N= Q l a... t N l N NH-C (J-NHO-NH-d -Ol 3,22 6, 1 76 19 20 4. The reaction product of cellulose fiber with a dye of the formula 5. The reaction product of cellulose fiber with a dye of the formula 6. The reaction product of cellulose fiber with a dye of the formula 0 0 S031?! SOaH 7. The reaction product of cellulose fiber with a dye of the formula 31 01 so H H I a -80; \l HzN -NH --NHPJ (J-NH N15t o 0-01 N N 0:80 sonar SOaH References Cited by the Examiner UNITED STATES PATENTS 3,149,100 9/1964 Hindermann et a1. 260-453 NORMAN G. TORCHIN, Primary Examiner. 

1. THE REACTION PRODUCT OF A FIBER SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, WOOL, SOLK AND LEATHER WITH A DYE OF THE FORMULA 